abstract class Father{
	private	int money;

	public void setMoney(int money) {this.money = money;}
	public int getMoney() {return money;}

	public abstract void study();

}

class Son extends Father {
	public void study() {System.out.println("I am studying");}
}

public class Ext6{
	public static void main(String args[]) {
		Son son = new Son();
		son.study();
	}	
	
}














